Quite often an auto mechanic needs to use some tools to fix or repair a particular part. One of such tools is an impact screwdriver. Every craftsman should know how this device works to avoid further ambiguities. This device is intended for unscrewing rusted bolts or screws. An ordinary screwdriver for such an action will not work. This is due directly to the fact that an attempt to unscrew this kind of bolt or screwdriver with an ordinary screwdriver can be immortalized by knocking down the "stinger". The Impact screwdriver has certain differences from the usual screwdriver. So, this tool has a reinforced metal body. The set of impact screwdriver includes 13 bits.